Condensing hot water boilers recover the waste heat in the flue gases and use it to pre-heat the cold water entering the boiler. This reduces the heat produced from burning fuel, minimising the emission of carbon dioxide.

Commercial Condensing Hot Water Boilers

Commercial hot water boilers (also known as heaters) are used in applications where there is a demand for continuous water flow. Our commercial hot water boilers are designed and built specifically for usage in a commercial and industrial space providing hot water for HVAC.

The Two 2 types of Hot Water Boilers – Condensing and Non-Condensing Boilers

Condensing boilers and Non-Condensing Boilers (standard) and it is often difficult to decide which one you need for a specific project. It is important to look at each project individually and speak to a professional to discuss your requirements.

When deciding on whether to choose between condensing or not condensing the following need to be looked at:

Cost

Efficiencies required

Temperature – we believe that the major deciding factor should always be the temperature.

Return on investment

It is important to know the difference between condensing and non-condensing boiler. It is often a Great Debate – Condensing VS Not Condensing

Condensing vs High-Efficiency Non-Condensing Boilers

High-Efficiency Non Condensing Boilers

Used when return temperatures are above 60°C. It provides higher efficiency compared to standard hot water heaters due to engineered turbulators. The general efficiency of up to 96% net and 86% gross.

Condensing Boilers

Perfect for temperatures loops with return temperature below 55°C.

Condensing boilers are cost effective at lower temperature loops which enjoy efficiencies of up to 107% net and 98% gross

If the heater is used at higher temperature loops, its efficiency drops from 107% to 101% where the 6% is lost vapour which could be used to pre heat the water

Simons only offer Stainless Steel and Titanium Stainless Steel options as we have found issues with Aluminium Heat Exchangers which fail much sooner when condensation is introduced

When comparing efficient condensing and non-condensing systems, condensing systems will be around 10-11% more efficient